Figs. 3 and 4 showthe forecasting errors generated by the model for 2010 in detail.We observe that large errors usually occur during national holidays. The reason for these errors could be the limited amount of data available for these holidays, and the assumption that the effect of different holidays is identical during the year. As more data becomes available about these special days, it will be possible to include a separate variable for each of them and improve the accuracy of the forecasts.